Dyfyniad APA

Quirk Randolph & Smith A H. Teaching of English. Oxford University Press.

Dyfyniad Arddull Chicago

Quirk Randolph and Smith A H. Teaching of English. London: Oxford University Press.

Dyfyniad MLA

Quirk Randolph and Smith A H. Teaching of English. Oxford University Press.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.